patch for mattn/efm-langserver: Fixed a bug when lint-stdin is false

handler.go.diff

diff --git a/langserver/handler.go b/langserver/handler.go
index 73e9be1..fbe5a8f 100644
--- a/langserver/handler.go
+++ b/langserver/handler.go
@@ -157,11 +157,17 @@ func (h *langHandler) lint(uri string) []Diagnostic {
 
 	diagnostics := []Diagnostic{}
 
+	cmdline := config.LintCommand
+	if !config.LintStdin {
+		cmdline += " "
+		cmdline += fname
+	}
+
 	var cmd *exec.Cmd
 	if runtime.GOOS == "windows" {
-		cmd = exec.Command("cmd", "/c", config.LintCommand)
+		cmd = exec.Command("cmd", "/c", cmdline)
 	} else {
-		cmd = exec.Command("sh", "-c", config.LintCommand)
+		cmd = exec.Command("sh", "-c", cmdline)
 	}
 	if config.LintStdin {
 		cmd.Stdin = strings.NewReader(f.Text)